Clustering of Au on the faulted half of the Si(111)-7×7 unit cell

摘要: We present a structure for Au deposited on the Si(111)-7x7 surface at very low coverage obtained by x-ray diffraction. have found adsorbed exclusively faulted side of unit cell. The atoms are to reside in sites which lie above Si and do not cause significant rearrangement covalent bonding network substrate, suggesting they weakly bound. considerable disorder can be modeled strongly anisotropic Debye-Waller factor. From this we extract potential interaction with Si(111) 7x7, is reasonable agreement theoretical predictions other species 7x7.